Generally, a download manager enables downloading of large files or multiples files in one session.
Many web browsers, such as Internet Explorer 9, include a download manager.
Stand-alone download managers also are available, including the Microsoft Download Manager.

if you do not have a download manager installed, and still want to download the file(s) you've chosen, please note:

You may not be able to download multiple files at the same time.
In this case, you will have to download the files individually.
(You would have the opportunity to download individual files on the "Thank you for downloading" page after completing your download.)

Files larger than 1 GB may take much longer to download and might not download correctly.

You might not be able to pause the active downloads or resume downloads that have failed.

The Microsoft Download Manager solves these potential problems.
It gives you the ability to download multiple files at one time and download large files quickly and reliably.
It also allows you to suspend active downloads and resume downloads that have failed.

Feature Summary
Deploy Windows and Office with Microsoft Deployment Toolkit 2012 Update 1. MDT is the recommended process and toolset for automating desktop and server deployment. MDT provides you with the following benefits:

Unified tools and processes, including a set of guidance, for deploying desktops and servers in a common deployment console.

Reduced deployment time and standardized desktop and server images.

Some of the key changes in MDT 2012 Update 1 are:

Added support for Windows 8 and Windows Server 2012.

Support for System Center 2012 Configuration Manager SP1 : Added support in MDT for deploying Windows 8 and Windows Server 2012 with Configuration Manager 2012 SP1 , while supporting all new Configuration Manager functionality (offline BitLocker, UEFI, and Assessment and Deployment Kit).

Support for DaRT 8 : Updated MDT to support DaRT 8 for Windows 8 deployments, while continuing to support DaRT 7 for Windows 7 deployments. Added DaRT support for Configuration Manager scenarios.

New “Build Your Own Pages” User-Driven Installation (UDI) feature: Enhanced the UDI wizard and designer to enable IT pros to design their own wizard pages with little effort.

New System Center 2012 Orchestrator support: Provided the ability to add steps into an OS deployment task sequence to execute Orchestrator runbooks as part of the deployment process.

Other improvements: Added support for Windows PowerShell 3.0, reworked Roles and Features installation logic for Windows 8, improved “boot from VHD” deployment scenarios, and added support for Configuration Manager monitoring.

Choosing the Right Version
MDT is available for x86 and x64 platforms. Select the version that corresponds with your host hardware type. Both versions of MDT 2012 support deployment of x86 and x64 Windows operating systems.

MDT 2012 Update 1 version 6.1.2373.0 (version 6.1.1 on this page) was made available for download on September 19, 2012 and adds support for System Center 2012 Configuration Manager CU1 and System Center 2012 Configuration Manager SP1 . It can be identified as MDT build 6.1.2373.0 in the MDT Deployment Workbench or in the installer program properties.

The What's New in MDT 2012 guide and Release Notes are available as separate downloads on this page for those who want to quickly evaluate MDT 2012. The full package of guidance is available in .chm format as part of the toolkit. For those who want it in Word format, a separate download is available in the Files in this Download list.

MDT 2012 Update 1 relies on several Windows deployment tools. After installation of the .msi package and startup of the Deployment Workbench, the user can choose to download and install the following major tools from the Components:

Windows 8 Assessment and Deployment Kit

Windows Automated Installation Kit

Application Compatibility Toolkit

MSXML 6.0

If you are using ZTI and/or UDI, you are allowed to add the MDT SQL database to any version of System Center Configuration Manager with SQL Technology; if you are using LTI, you must use a separately licensed SQL Server product to host your MDT SQL database.

Microsoft Word or Word Viewer (available as a free download) can be used to view Word documents.